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A technician is ordering replacement memory for a laptop that uses DDR4 SODIMM modules. How many pins does a standard DDR4 SODIMM have?
- A260 pins, the standard edge-connector count used by DDR4 laptop memory modules Correct
- B204 pins, the standard edge-connector count used by DDR3 laptop memory modules
- C240 pins, the standard edge-connector count used by DDR3 desktop memory modules
- D288 pins, the standard edge-connector count used by DDR4 desktop memory modules
Recognise that a DDR4 SODIMM uses 260 pins, distinguishing it from DDR3 SODIMMs and from desktop DIMM pin counts. SODIMMs are the compact memory form factor used in laptops, and JEDEC assigns each generation a distinct pin count so incompatible modules cannot seat; DDR4 SODIMM is standardised at 260 pins while DDR3 SODIMM is 204.
Why A is correct: Correct: JEDEC defines the DDR4 SODIMM with a 260-pin edge connector, distinct from the DDR3 SODIMM and from desktop DIMMs.
Why B is wrong: Tempting because 204 is a genuine SODIMM pin count, but it belongs to DDR3 SODIMM, not DDR4, so it is the wrong generation.
Why C is wrong: Tempting as a real DDR3 pin count, but 240 pins is a full-size desktop DIMM, not the smaller laptop SODIMM form factor.
Why D is wrong: Tempting because 288 is the correct DDR4 count, but it applies to the full-size desktop DIMM, not the laptop SODIMM.